<template>
<div>
  <el-card>
    <el-button type="primary">添加角色</el-button>
    <el-table :data="rolesList" border stripe>
      <!-- 展开列 -->
      <el-table-column type="expand">
        <template slot-scope="scope">
          <el-row class="vcenter" :class="{'bdbottom':true,bdtop:i1 === 0 ? true : '' }" v-for="(item1, i1) in scope.row.children" :key="item1.id">
            <!-- 渲染一级权限 -->
            <el-col :span="5">
              <el-tag closable @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
              <i class="el-icon-caret-right"></i>
            </el-col>
            <!-- 二级权限 -->
            <el-col :span="19">
              <el-row class="vcenter" :class="{'bdbottom':true,bdtop:i2 === 0 ? true : '' }" v-for="(item2, i2) in item1.children" :key="item2.id">
              <!-- 渲染二级权限 -->
                <el-col :span="6">
                  <el-tag type="success" closable @close="removeRightById(scope.row,item2.id)">{{item2.authName}}</el-tag>
                  <i class="el-icon-caret-right"></i>
                </el-col>
                <!-- 渲染三级权限 -->
                <el-col :span="18">
                  <el-tag type="warning" v-for="item3 in item2.children" :key="item3.id" closable @close="removeRightById(scope.row,item3.id)">{{item3.authName}}</el-tag>
                </el-col>
              </el-row>
            </el-col>
          </el-row>
        </template>
      </el-table-column>
      <el-table-column type="index"></el-table-column>
      <el-table-column label="角色名称" prop="roleName"></el-table-column>
      <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
      <el-table-column label="操作" width="300px">
        <template slot-scope="scope">
          <el-button size="mini" type="primary" icon="el-icon-edit">编辑</el-button>
          <el-button size="mini" type="danger" icon="el-icon-delete">删除</el-button>
          <el-button size="mini" type="warning" icon="el-icon-setting" @click="showSetRightDialog(scope.row)">分配</el-button>
        </template>
      </el-table-column>
    </el-table>
  </el-card>
  <el-dialog
  title="分配权限"
  :visible.sync="setRightDialogVisible"
  width="50%"
  @close="setRightDialogClosed">
    <el-tree
    :data="rightsList"
    show-checkbox
    node-key="id"
    :props="treeProps"
    default-expand-all
    :default-checked-keys="defKeys"
    ref="treeRef">
    </el-tree>
    <span slot="footer" class="dialog-footer">
      <el-button @click="setRightDialogVisible = false">取 消</el-button>
      <el-button type="primary" @click="allotRights">确 定</el-button>
    </span>
  </el-dialog>
</div>
</template>

<script>
export default {
  data() {
    return {
      rolesList: [],
      setRightDialogVisible: false,
      rightsList: [],
      treeProps: {
        label: 'authName',
        children: 'children'
      },
      defKeys: [],
      roleId: ''
    }
  },
  created() {
    this.getRolesList()
  },
  methods: {
    // 获取列表
    async getRolesList() {
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.rolesList = res.data
    },
    // 删除权限
    async removeRightById(role, rightId) {
      const confirmResult = await this.$confirm('此操作将永久删除该用户，是否继续？',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
      // console.log(confirmResult)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const { data: res } = await this.$http.delete('roles/' + role.id + '/rights/' + rightId)
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.$message.success(res.meta.msg)
      role.children = res.data
    },
    // 显示树状图
    async showSetRightDialog(role) {
      this.roleId = role.id
      this.setRightDialogVisible = true
      const { data: res } = await this.$http.get('rights/tree')
      // console.log(res)
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.rightsList = res.data
      // console.log(this.rightsList)
      this.getLeafKeys(role, this.defKeys)
    },
    getLeafKeys(node, arr) {
      if (!node.children) return arr.push(node.id)
      node.children.forEach(item => this.getLeafKeys(item, arr))
    },
    setRightDialogClosed() {
      this.defKeys = []
    },
    async allotRights() {
      // 默认选中和半选中的id
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      // console.log(keys)
      const idStr = keys.join(',')
      const { data: res } = await this.$http.post(`roles/${this.roleId}/rights`, { rids: idStr })
      console.log(res)
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.$message.success(res.meta.msg)
      this.getRolesList()
      this.setRightDialogVisible = false
    }
  }
}
</script>

<style lang="less" scoped>
  .el-tag{
  margin: 7px;
  }

  .bdtop{
    border-top: 1px solid #eee;
  }

  .bdbottom{
    border-bottom: 1px solid #eee;
  }
</style>
